well, first you have to complete all 29 maps or how-many there were on every single charracotor
Not really no but you can get a round about speed indication from the impact density the tire baldness etc
It is your own fault. You drove into it so you get it fixed, along with the wheel stop.
It's just a higher gear. It lets you turn less RPMs at speed, which, in turn, saves you fuel.
If you hit a vehicle that is unattended, you should first notify the police. They will let you know if they need to be present to write an accident report. After that, under one of the windshield...