How Quick Is A Roller Coaster?

Car and Driver took a road trip to Cedar Point and brought their Racelogic Vbox testing rig. How quick is a roller coaster? Watch the video and find out. (Hint: Below 60 mph, it'll smoke almost anything on wheels.)

Just for reference, this is what C/D's video-capable Vbox looks like. Also, John Philips just wrote his own donkey show. Which is pretty cool.

[Car and Driver]