Quoted from Chitownpinball:#1 There is no coil in the shooter lane. Either your spring needs replacement, or something is bent or misaligned with the wire form coming out of the shooter lane.
#2 There is no car replacement other than is Steve Young has one over at Pinball Resource. I have seen people replace theirs with models, etc. It can be done.
I second #1- the spring probably could use replacement. If it is hitting the wire form on the way up, make sure the bolt holding it down is tightened appropriately from the underside. Both are very easy adjustments.
#2- Making your own replacement vehicle is surprisingly not that challenging and looks a lot better in my opinion. Here is a link to a thread about it. https://pinside.com/pinball/forum/topic/street-fighter-ii-mod