I would think about highways, major roadways, or interstates in your area. Highway __ can work, or there are probably roads or streets near you that have a workable name. If the name has I- or "Highway" or "Road" in the name, that helps to relay the theme. You could also make up a fictional road or highway name, or use a common phrase...the first thing that comes to mind is the OPPOSITE of what you want to convey...BUMPY ROAD...so you don't wanna use that, but as an example of a common phrase...you get the picture. Think cool, speed, or successful... Autobahn?