Bot problem - doesn't want to sit in a seat, any fix?

Hello, I made a bot script that makes it go to the nearest bus, sit in a seat, and jump out of the bus when it reaches the destination. The script works for the first time but after second time the bots don't sit in seats, they just walk through them. After model regen they also don't react with seats. Any help would be appreciated.

Here's the map:

https://cdn.discordapp.com/attachments /598169921226014722/673932785022402561/bot7.rbxl