What are you driving?

While more resistant than other steels to corrosion, stainless steel is not inmune to it. In fact, unlike other steels that rust homogenously, stainless steel rust at some points forming corrosion pits, which is worse in some ways. This and the high cost are the reasons for painted steel being the more used material in shipbuilding.
 
Forget the Kia Boyz: Hackers could hijack your car with just a smartphone

Put away that screwdriver and USB charging cable – the latest way to steal a Kia just requires a cellphone and the victim's license plate number.

Sam Curry, who previously demonstrated remote takeover vulnerabilities in a range of brands – from Toyota to Rolls Royce – found this vulnerability in vehicles as old as model year 2014. The mess means the cars can be geolocated, turned on or off, locked or unlocked, have their horns honked and lights activated, and even have their cameras accessed – all remotely.

The vulnerability also exposed victims' personal details – name, phone number, email, and physical address – and let attackers add themselves as invisible secondary users to the vehicle.

The issue originated in one a Kia web portals used by dealerships. Long story short and a hefty bit of API abuse later, Curry and his band of far-more-capable Kia Boyz managed to register a fake dealer account to get a valid access token, which they were then able to use to call any backend dealer API command they wanted.

"From the victim's side, there was no notification that their vehicle had been accessed nor their access permissions modified," Curry noted in his writeup. "An attacker could resolve someone's license plate, enter their VIN through the API, then track them passively and send active commands like unlock, start, or honk."

Curry's team developed a smartphone tool that automated the process, but didn't release it. Not that it would matter much, really: Curry noted that Kia has fixed the issue, and he's verified the exploit no longer works.

"Cars will continue to have vulnerabilities," Curry noted. "In the same way that Meta could introduce a code change which would allow someone to take over your Facebook account, car manufacturers could do the same for your vehicle."
 
As I'm moving to Melbourne next year... I'll be leaving my ute behind. Probably for the best, since I'll probably be staying at on-campus accomodation, and Melbourne has something called public transport (?) (there's more than just buses?)
 
As I'm moving to Melbourne next year... I'll be leaving my ute behind. Probably for the best, since I'll probably be staying at on-campus accomodation, and Melbourne has something called public transport (?) (there's more than just buses?)

Love a ute! what you driving?
 
Does anyone try and think about optimum throttle position of fuel efficient acceleration? I have been trying to read the brake specific fuel consumption / volumetric efficiency charts, but I am not sure I am any wiser. I totally do not get what an engine engineer would talk about g/kWh when he could simplify it to percent.

Brake Specific Fuel Consumption (BSFC)

Brake-Specific-Fuel-Consumption-BSFC-with-operating-points.jpg

Spoiler The P 1 - 4 thing :
Let’s take as example four operating points of the engine (defined by engine speed and MEP). The coordinates of each point and the value of BSFC are centralized in the table below.

Engine operating pointEngine speed [rpm]MEP [bar] (engine load)BSFC [g/kWh]
P127509240
P2275013225
P3375013240
P437509260
The most efficient engine operating point is P2, with the BSFC in the area of 240 g/kWh. P1 and P3 have the same brake specific fuel consumption even if the engine is operating at different speed and load. The most inefficient (highest BSFC) operating point is P4.

Fuel conversion efficiency map
Fuel-conversion-efficiency-map.png
 
I was always taught (by a man of Yorkshire heritage) that the ideal acceleration in the one that doesn't cause you to use the brake stopping yourself constantly. Wears on the brakes, and wastes fuel!
 
I was always taught (by a man of Yorkshire heritage) that the ideal acceleration in the one that doesn't cause you to use the brake stopping yourself constantly. Wears on the brakes, and wastes fuel!
The accelerator uses fuel, the brake wastes it.
 
Avoid driving too close to the car in front, avoid accelerating if you know you're going to make turn soon. I avoid braking as much as possible.
 
Here is another graph I pore over. This seems to be advocating for driving at close to full throttle in 5th gear at ~1750 rpm. I always th
The-effect-of-gear-ratios-on-BSFC.png
ought that was how you broke the head gasket.
 
No 3rd gear on that last chart?
 
Love a ute! what you driving?
That indestructible blue 98’ Hilux.

My stepdad’s generously offered to get me a car in Melbourne despite it all, and I may just ask for another old Hilux (if I ever do ask in the end).

We once had a Navara but it was a rather large and slow beast. I like the compact utes better.
 
That indestructible blue 98’ Hilux.

My stepdad’s generously offered to get me a car in Melbourne despite it all, and I may just ask for another old Hilux (if I ever do ask in the end).

We once had a Navara but it was a rather large and slow beast. I like the compact utes better.

Nice! I've had a few of those beauties. This was my last one.

1732475585885.png
 
In the US White, black, and some version of silver/grey dominate car colors. Is that true in the rest of the world?
 
Pretty much. Outside of New York I have never seen a yellow car on the road. I’ve also been told green cars are unpopular due to some urban legend about them being more likely to crash…

Because we have so many Hilux Surfs (precursor of 4Runners) on the road in New Zealand, baby-blue and maroon are also decently prevalent.
 
Here is another graph I pore over. This seems to be advocating for driving at close to full throttle in 5th gear at ~1750 rpm. I always th
The-effect-of-gear-ratios-on-BSFC.png
ought that was how you broke the head gasket.

1750 is a very low RPM for a car engine. So something missing there.
 
Pretty much. Outside of New York I have never seen a yellow car on the road. I’ve also been told green cars are unpopular due to some urban legend about them being more likely to crash…

Because we have so many Hilux Surfs (precursor of 4Runners) on the road in New Zealand, baby-blue and maroon are also decently prevalent.


Green is very common in the US. Yellow less so, but no so rare as to be noteworthy.
 
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