[truth_seeker]

I’ll suggest the time of the accident is the clue:

4:15 am.

[Veto!]

You don’t suppose the drugs and alcohol were involved, do you? At 4:15 a.m., where was he coming from?

[UCANSEE2]

All they had to do was let him know they had a juicy story.
Then, ask him to meet with them at 3am.

Then, they rigged his car.

I guess the fact he was burned to death would eliminate any messy autopsy that would tell us if he was ‘under the influence’. How convenient.