At the hardware (hardware as screwdrivers, iron, … and not as HDD, CPU…) stores here the folks sometimes drives scooters, that are powered by an electric accu drill/screwdriver which you can plug at the rear wheel, looks really funny.
But the best comes: The manufacturer (Bosch) makes every year races with such “machines”. This year the “HAWK” http://www.akkuschrauberrennen.de/dieherausforderer.html, is not build, no it is PRINTED with a 3D-printer. If that isn´t geeky, I dont know what it is.