Also, you do not want to have your gas cap off with your car on. You are going to make the car think you have a vacuum leak.
Cars haven't been vacuum powered for the past 20 years dude
There are many ways to transfer power throughout a complex machine. You can use vacuum, pneumatics, hydraulics, electricity, belts, etc.
Modern stuff uses electricity. Cars in the 60s had vacuum windshield wipers. My car uses motors to power the wipers.
60s cars used vacuum to pull fuel into a carburetor. My car uses a standard electric pump.
Many old cars used vacuum for the brakes. My car uses electronic brakes.
Many older vehicles used vacuum for the power steering; my dad's motorhome made a weird hissing noise when steering. My car uses electronic steering.
My parents old cars had a belt driven fan to cool the radiator. My car uses an electric fan that turns off as needed to save fuel.
Old transmissions used vacuum for gear shifting. My car uses electronic gear shifting ("ECT" = Electronically Controlled Transmission).
Many old cars used vacuum for the power locks. My car has electric motors for the locks.
most newer cars measure pressure inside the tank and doing this can cause a CEL
This was explained by the Honda guy when I bought my last last car. He said if your car shows an error after filling the tank, it means you didn't screw the cap on tight enough. Screw it until it clicks once and the light goes away.
Another thing that doesn't really count as a myth is people thinking it's some kind of conspiracy that diesel cars are everywhere in Europe but are extremely rare in Canada. The reason for this is actually very technical; it's not laws and it's not a conspiracy. Diesel engines are incredibly hard to start in cold weather. Your standard gasoline Honda Civic will fire up the first time it turns over in -40 weather, but you can't do that with a diesel engine. Diesel fuel tends to gel at low temperatures, and it doesn't work when it's like that. It will even gel in the fuel tank
while the engine is running which can cause the engine to die. Can you imagine buying a car like that? It's running fine then it just suddenly dies like it ran out of fuel even though the tank is full?
Diesel vehicles have all kinds of bullshit to deal with this. Special heating plugs in the engine, in the fuel tank, insulation around the tank, recommend you plug the vehicle in before starting, etc. These vehicles suck.
To put it into perspective of why your British diesel car won't work in Canada. London, England's average low temperature is 36F (2.4C) in January. Edmonton, Canada's average low temperature is 3F (-16C) and the lowest on record is -48F (-44C). Hitting -22F (-30C) at night and in early morning is very common in January. Have fun not getting to work on time.