The Colorado Department of Transportation recently tested a traffic blimp over Denver to keep a high-altitude eye on interstates in the Mile-High City. The device is tethered to the ground, but officials get a much more complete view of what's happening on the road.
- 2018 Honda Accord is sleeker, more efficient
- Mercedes X-Class pickup truck revealed
- Find and compare 2017 Models
There are no questions about this topic.Be the first to ask!