Why are they called "parkways" when we drive on them?

Reading The Power Broker, a biography of Robert Moses, i think i've learned why they are called "parkways". They were designed for passenger vehicles and, in New York, they were the main routes to public parks and beaches. Tree and lawn plantings along the road were supposed to be park-like in contrast to expressways that were solely meant to get from one place to another and allowed truck traffic. So, there's the answer to that!

We need more parkways in Southern California--having ivy and concrete stamps on a wall is nice and all that, but you're still sandwiched between to walls of concrete and thousands of pounds of fast-moving steel. On top of that, i hate it when gravel trunks are on the freeway because invariably little stones come whizzing by and scratch my poor car and chip the windshield, arg.

I didn't find an answer to the driveway part, but maybe "driveways" are called that because the original ones, for large homes, were the carriage drive and not merely the short distance from the curb to the garage.