If you are ever confronted with a situation where you have to escape from a kidnapping attempt or vehicular ambush, and backing out of the killzone is impossible, a simple rule to keep in mind is….
….consider the size/weight of your vehicle and the size/weight of the vehicles blocking you in.
Regardless of that comparison, you do not want to impact the engine end of a vehicle with yours. Most of the mass of a vehicle is in the engine and you don’t want to strike the heaviest part of their car with yours.
If you absolutely have to push your way out of a roadblock, pick the car that is as close to or smaller than the size of yours and aim for the back end of it.
You do NOT want to hit the other vehicle at a high rate of speed, 20-25 MPH is the sweet spot. Do not hit the brake as you push through, remember to keep your foot on the gas and accelerate through. Be prepared for airbag activation, but do NOT stop. Recover from the impact and drive away ASAP.