Andrew Durbin agrees with Bill Hampton to collect his car at 21:00, but, on the night of Bill's murder, Durbin's airtight alibi is that he was eating out from 20:00 to 23:00. No explanation is given as to why he didn't go back to the garage to collect it (the sheriff mentions the following morning that the keys are still in the garage office so he couldn't have collected it earlier).
When Jessica is at the coach's retirement party she is taking with the judge. The other characters join them and you clearly see the guy in the wheelchair using his legs to assist him in turning around.
Bill gets into his Jeep. He turns the lights on, takes off the hand brake and then starts the ignition without a key. It is clearly shown that it is not in the mechanism and that he is not holding it.
Durbin tells the dealer that the LEFT side electrical system has a problem and that his LEFT headlight is not working. However, it is the headlight on the RIGHT that is not working.