1. Car he was locked out of was parked in a driveway.

2. Cops dropped him off at sister’s place of work so he could borrow her car, use it to drive from Peabody MA to York ME, to get his spare set of keys.

3. Sister was last to see him, no? After handing her keys to him.

4. He and the sister’s car he borrowed are reported missing the next day.

Lets not jump to the conclusion that it’s suspicious. We don’t yet know the whole story and won’t know the whole story until he is found, hopefully found safe and well.