Avis and airports go hand in hand. The car rental company was the first to combine forces with flights when it launched at Detroit’s Willow Run Airport back in 1946, quickly replicating its efforts at Miami International Airport . In the years since, it’s opened locations across the country and around the world, acquiring companies like Budget and Zipcar along the way. If I had to guess, I’d bet the brand has crossed your path in your travels. What you might not know is that they’ve been streamlining the check-in and check-out process since the ’80s. That once looked like “Roving Rapid Return,” a handheld computer terminal that let customers bypass the Avis counter; today, it means you can use an app to select your car, request upgrades, and check in from anywhere. I’ve personally rented cars through Avis for weekend getaways from NYC , and can attest to how quick and easy they make the process, even from a busy hub like LaGuardia Airport.…