If you like your vehicle carnage fast and total, then you'll probably just maybe be slightly interested in seeing what the Barrier1 Vehicle Arrestor does to a 6800kg truck travelling at 80km/h. Spoiler: it's a bad day to be a truck.
The Vehicle Arrestor - a reinforced fence that pops up from underneath the road to unleash all hell on its victims - is probably my favourite of this rogue's gallery of wicked roadblock technology, but the Crash Beam gets bonus points for looking so darn innocent. Now if only they made a home version. [Reddit via Geekosystem]