Rental Car that fits One booster and 2 Car seats

[moismom]

Is a minivan my only option? MY 6yo will be travelling with a backless booster and my 4yo will be in a marathon or her sister's parkway booster. The baby will be in a marathon or an eddie bauer infant seat. Is there a rental car that will fit all 3 in across in the back seat or must I rent a minivan?
Thanks,
Kinsey

[Neatfreak]

I think that you could also do a full-size sedan, like an Impala or a Town Car. Their back seats seem to go on forever!