EGO CUP is referenced as a solid hands-free solution to help motorists comply with hands-free legislation. Check it out here: Yahoo's Christopher Null

EGO CUP

This new speakerphone, as the name implies, sits in your car's cup holder and requires permanent tethering to the 12V cigarette lighter adapter for power. The lack of a rechargeable battery has pros and cons: The good news is that you never run out of juice and have to deal with recharging (with the VisorTalk, it must be frequently taken down from the visor and plugged into the lighter, which makes it periodically less useful as it sits in the passenger seat). The bad news is that you lose a 12V plug permanently. Depending on your car you could end up with cables snaking around in unsightly places, too.

I had worried that being in the cup holder, audio quality wouldn't be as good as with a visor mount (which puts the microphone right by your face), but the EGO Cup was just as good as VisorTalk on both outgoing and incoming audio, likely due to the giant mic that attaches to the back of the Cup. Color me impressed. Setup is very simple, and the controls are easily accessed and intuitive (answer/end call/volume... that's it). There's no caller ID function, which is a shame, but since you'd have to take your eyes off the road to check out who's calling, maybe that's intentional.