If you have a family of 5 (and to be fair anything more than this needs a minivan to move everyone and is therefore a hopeless situation) then a 5 seater and a 2 seater will do. Everyone in one car? Take the 5 seat. 1 kid need to go somewhere, take the 2 seater. 2/3/4 people need to get somewhere, take the 5 seater.