Well, l have an old ipod shuffle (my dad got it free at a party)...
He left his new Lexus Es 330 to get a second layer of paint on it.
l left my ipod in there. It was in a pocket in the passenger seats.
Will the service guys inspect the inside even if the gave it for another body painting

probably not. The only reason they will inspect the interior is if he is also getting work to the inside of the car, or if they dealership is planning on cleaning the inside vehicle, and if they do happen to stumble across your ipod, it is against the law for them to take it, they will loose their job.

If he took it to the Lexus dealer, then of course not- Lexus dealerships take pride in their work and would not steal or sneak around your dad is car for no good reason.

l think it will still be there when you get the car back.

Good luck getting the Ipod back. Have your dad call the paint place and get it before it is taken.