Good point: the airport access at SJC is SO poor that you cannot reliably get into the rental car return area without arriving at the 101 off-ramp about 1 hour ahead of your flight. This is not Avis's fault, but remember this warning, so you're not cooling your heels waiting after your missed flight. Trust me, it's a real problem, especially in the middle of the day, and always if there's any construction going on.