10 Classic American Drive-In Restaurants Slideshow

Bethel's Sycamore Drive-In hasn't been owned by the same folks since it first opened, but it has been run continually since 1948. And the original owners did hand down recipes for the joint's "French-style" steakburgers and homemade root beer.

As for curb service, you just pull in and park, turn on and flash your lights, and a carhop will come right up to your car to take your order. The Sycamore's "final answer to the burger" is their Dagwood Burger: five ouces of ground steak, a slice of American cheese, mustard, ketchup, picklse, onions, tomato slices, lettuce, and mayo. If that's not enough, you can top it with extras like chili, fried onions and peppers.

Click here for the full story.