Kiddopotamus Piddle Paddle
When I first started toilet training my eldest son I had concerns about what we would do for the car trips (even the short ones), especially after two accidents in the car. Dismantling the car seat is not my idea of fun :)
I discovered the Piddle Paddle and thought it was the best thing. It protects the car seat, is super soft and is easy to clean if we have an accident. You just have to throw it into the washing machine.
Definately a must have for your car seat.