Even if you've been through this level 100 times, you'll want to approach each obstacle with caution. (lightgungalaxy.com)
The front bumper of the ZR2 has tapered ends, to increase the tire clearance when approaching obstacles. (topspeed.com)
In addition, the experiments were not performed in darkness and didn't test if the call rate changes on approaching an obstacle, says Eran Amichai from Tel Aviv University, who studies bat echolocation. (newscientist.com)