The coolest of the two is the Pit-BUL, which looks like a conventional speed bump but can deploy a net, as seen above, that almost immediately disables vehicles running over it. Designed more to protect an established position such as check point, border crossing or a military base entrance, this device works by using spikes attached to a large netting to lock up the front wheels. Each Pit-BUL costs up to $29,000, and since the nets are only useable for one application, additional net kits cost as much as $3,000.
As more of a mobile tool, the NightHawk is a deployable spike strip that can operate remotely to keep officers out of danger. When deployed, a beanbag-like projectile is fired from the container and carries with it the spike strip. After the intended vehicle has run over it, an internal motor can retract the strip so other vehicles don't accidently get flat tires.
Scroll down to watch both devices in action.