Ariel Atom.... cool ride, but not street legal in the U.S.... yet! Plus, it is even less practicle than the Elise (not that the Elise is the slightest bit practicle).
News! Lotus will be offering a dealer installed supercharger kit for the Elise... with warranty. For about $6K.
Will increase performance from 0-60 to about 3.6 seconds.... and 1/3 mile in 12.2 seconds.
I think HP output will be 250 HP, but with much more torque in the low end (which the current Elise suffers from).