Humor Are Santa’s reindeer used for propulsion or navigation?

[SandroSalgueiro]

Never an engineering discussion topic kept me so entertained

http://engineering.mit.edu/live/news/1802-are-santas-reindeers-used-for-propulsion-or

 

[mojoey]

both, but however, in recent years due to the commercial aviation increase, Rudolph's nose serves as a safety beacon of sorts, along with the flashing bumper sticker 'We brake for cookies and milk'

 

[N_Molson]

The technology used seems very similar to the one of the Star Wars racers :

Basically, it's the same engineering design.