Trucks HD by Duck Duck Moose (iTunes) $1.99
Trucks has five fun activities including a car wash, first you get your car nice and muddy, and construction vehicles. Ages 3 and up.
Pick a character and drive around the course or build your own course. As with all Toca creations there is tons of silliness! Ages 3 and up.
Boats by Oceanhouse Media (iTunes) $1.99
A great interactive version of Byron Barton's "Boats". Ages 3-5.
Wheels on the Bus Band by Mibblio (iTunes) $0.99
This awesome music app allows you to join the band! Ages 3 and up.
Design A Train by Playtend (iTunes) $1.99
Color and design your own trains and then run them through a variety of stations. Ages 3 and up.