personaly i think turbo are amazing things, incresing the power of small capicity engines is something that is quite remarkable
"turbo the replacment for displacment"
aswell as awsome AWD systems (such as that found on WRX's and Evo's)
it is quite intresting to understand how they work and evreything associated with them.
http://www.prestigemotorsport.com.au/au/html/turbo.html