Driveway was originally used to describe the way from the main road to the house set back off the road. These were often quite long, with curves, etc. It was a real drive from the road, through the driveway to the gargae or parking area. Over the years, houses were built closer and closer to the road and the length of the driveway became shorter and shorter. Also, garages often disappeared or were replaced by carports - or nothing at all - and people ended up parking in them. Today, some 'driveways' are only one car-length long, but the name has stuck.Most cities had some sort of municipal park system, and parks were often the target destination for people, especially on Saturday and Sunday afternoons. Many cities built rather fancy roads to their showcase parks, and these were called (you'll never guess) 'parkways'. - the way to the park. Over the years, the original usage was lost, and many 'regular' roads were called parkways, although the name did tend (but with plenty of exceptions) to be reserved for a 'fancier' type road, typically a divided way with grassy, planted medians.
Check this out---there are 3 pages of people who asked this question now--lol...LOTS of answers here:http://qna.live.com/Search.aspx?q=%22drive+on+a+parkway&mkt=en-US&FORM=BQ
Because our language is wierd...!! You 'take' a train, but never keep it, 'make' money, but never print it and 'fall' for a gag without moving an inch.
Get some new material- that joke is at least forty years old.