Yes. Here's how you can make your own: http://www.instructables.com/id/5-Minute-Project:-Drill-Powered-Skateboard/ And here's a few links to patents for more: http://www.patentstorm.us/patents/5280935/claims.html http://www.patentstorm.us/patents/5839737.html http://store.payloadz.com/str-asp-i.2153-n.Self_Propelled_Skateboard_eBooks_-end-detail.html http://www.freepatentsonline.com/D256711.html http://www.freepatentsonline.com/7172044.html - that one is a "wheelboard", whatever that means Yes. Here's how you can make your own: http://www.instructables.com/id/5-Minute-Project:-Drill-Powered-Skateboard/ And here's a few links to patents for more: http://www.patentstorm.us/patents/5280935/claims.html http://www.patentstorm.us/patents/5839737.html http://store.payloadz.com/str-asp-i.2153-n.Self_Propelled_Skateboard_eBooks_-end-detail.html http://www.freepatentsonline.com/D256711.html http://www.freepatentsonline.com/7172044.html - that one is a "wheelboard", whatever that means
self propelled reaper
Lunokhod-1 was the first self-propelled vehicle on the moon.
An aircraft with an engine. A non-self propelled aircraft would be a balloon or a glider.
How do you change the blade on a Toro 21" self-propelled mower
How to Change the Tires on Self-Propelled lawn Mower
Dyson makes several different models of self-propelled vacuums.
A rocket.
The modern definition of a torpedo is a self-propelled underwater missile. (see related question)
There were 4 wheels on the first self propelled vehicle, built by Henry Ford.
Self propelled mowers are not self driven. The mower has a safety switch which does not allow the unit to turn on itself. A person is required to turn on and steer the mower.
All airplanes are self propelled except gliders. You would make it like airplanes have been made from the beginning.
For the purposes of automobiles, nothing