OK this seems like a good place to mention this. After my second year of college, my high school friends and I got together to take a road trip. One friends Dad's had this gem of a 86 Olds Cutlass Cierra Bougham. 4 of us pitched in and bought it for $200. It had a drippy fuel line (rusted metal-type line) by the rear passenger side doors, but it wasn't that bad, so we let it ride (I feel old saying 'gas wasn't as much then!' - this was only 10 years ago...)
We decided that if it died, we'd leave it and take a bus or flight back home. But we didn't need to worry - that POS made it from NH, through New York to Toronto, to Niagara Falls with a quick stop to Virginia Beach on the way back to NH. Best road trip I ever took - I have so many memories from it (like my friend Dave stealing my sunglasses off my face when I threatened to throw the damned Journey tape out the window).
As for rentals, I just had a 2011 Camry for two weeks a short time ago, and that thing STUNNED me. It was a 4-banger, but man that thing hauled some butt and stuck it to the corners just as well! I was really pretty shocked that a run of the mill Camry moved like that. There were several times where the thing kicked down a gear or two when I nailed it and I had to grab the wheel with two hands thinking, "What the - !? Where did THAT come from!?" So you know...get one of those if ya can... :)