My parents related an experience from lunchtime today and I feel like something was off with the situation but can't quite place it. It seems like things are fine for now, and I could be overreacting, but wanted to see what others think.
Parents are visiting from out of state and driving their mid-2000s Honda, which they took to the local sandwich shop to pick up lunch. In the parking lot after they had parked and were walking to the store, some guy came up and mentioned the brake light was out, their car was old, etc. He also said he would be interested in buying the car, and asked for their phone number and my dad exchanged name/number. I think all of this happened outside the shop in the parking lot, but some of it could have happened while they were in line in the store - I'm not clear on the specifics there.
He walked/followed them to the shop, holding the door open to let them in and trying to come off as super friendly, etc. I think my mom felt like the guy and whole situation was weird, so she kept an eye on him in the store and noticed he eventually left without ordering. When they left the store with their food, she said the guy and his car was gone.
Obviously there was a lot of stupid decisions made by my parents in this situation where the guy was an unknown, although I think my mom did the right thing at least keeping an eye on him in the shop and seeing if he'd left before returning to their car. Other than worrying about generally trying to help them understand how and why to MUC (my dad still insists nothing is wrong), are there any things I should be worried about given the sketchy nature of that conversation and the fact my dad shared his name (not legal name) and phone number?