Sadly, no, we are not necessarily talking about filing charges and going to court. As it has been implemented in other jurisdictions (mostly in California), they will seize the cars immediately at the scene and consider them forfeited. Each person must then file suit against the jurisdiction if they want to prove their innocence and reclaim their property (guilty until proven innocent). It's based on the model used by the "War on Drugs": if the DEA thinks you are a drug dealer, they can seize ALL of your assets without any trial, and you must fight to get them back -- which is pretty hard to do when you have no money or collateral with which to retain a lawyer.

The devil will be in the details. We need to make sure to read the fine print in any proposals, and make sure we tell our representatives how we feel about them. As they say, if you don't participate, you'll get the type of government you deserve!