Which is still somewhat bogus until late game, because Electivire isn't sweeping a team with atleast 4 healthy pokemon/being baton passed something wicked successfully (which still isn't sweeping said team, unless he got two SDs or something... ).
Not to mention you're gambling on an electric attack to hit; if that doesn't happen, you could end up wasting a switch/ruining the element of suprise, lowering your chances of a motor drive boost significantly. Electivire just isn't excellent, speed boost or not. He's actually pretty gimmicky, you could say.
... Until someone thinks up a very effective CB set. Then maybe he'll have a possibly great set.