Plus the law has made that choice for you. Sacrificing another life to save your own, intentionally, is second-degree murder (first if answering this question means you planned it in advance).

If you answer yes to this question, aside from being a scumbag, if it does actually lead to an action taken by the car, you could face execution (worst possible case, granted, but there's a minimum prison sentence too).

Plus, this would hardly be the first way for cars to kill you. Brakes can fail, the steering column can fail, the gas tank can fail. All these things are rare, but certainly not impossible, and quite likely to kill or at least injure you.