Re: Artificial constructs
"Clearly in your scenario you stop about a 100m (depends how fast you can run) from the accident, slew your car sideways blocking the tunnel and run towards the exit."
One of them is driving a heavy truck. They can just ram your sideways car and keep going shoving it along like a plow.
"As the bad guys stop, exit their cars and give chase you fire repeatedly into the fuel tank of your car causing it to explode and deter the bad guys from continuing the pursuit."
Busted by the MythBusters some time back. You'd have to be carrying incendiary rounds to even get a chance of lighting the gas in the tank, and even then it'll be a slow burn, time enough for them to climb over or otherwise get your car out of the way. Plus it won't do much versus the big truck driver.
"You run to the accident area and steal one of the cars of the good samaritans that has stopped to help and make your getaway."
Except the nearest cars happen to be police cars, and they tend to react VERY badly to having their cars stolen. Some of them start shooting.
Biting the hand that feeds IT
