How do i take care of two baby red slider turtles?

i have them in a pet carrier im in nyc im going back to ohio brooklyn and will thery survie on 9 hours of car ride i have 3 filters at home n4 tanks one has nothing in it im puttinyg them in there it is a 55 to 65 gallon tank what filter i heard to buy a filter more than twice of the gallon tanks so what do i feed them all the advice u can give me oh ps can u tell me in steps how to set up the tanks thanks for all the answers