I need a vehicle to fit 4 kids!!

I have a 13 year old, a 9 year old a 4 month old and recently found out we are expecting again. I have a Volkswagen Beetle that we were making work because i dread having a car payment. Now that a bigger vehicle is a must, what kind of vehicle will work for a larger family? I prefer not to get a minivan but i might have to. I was thinking a station wagon? Any advice on what works great for mommas of 4? A school bus? Lol