My friend claims that when he plugs his G1 into his car stereo AUX input, he can leave his phone on the dash and just make regular calls w/o using speaker phone. He says that the voice is pretty clear on the other end. Has anyone tried this with their previous phones? More importantly, does anyone know if the mic on the EVO would be sensitive enough to make descent calls via AUX? I know that it would depend on the background noise in the cabin as well, but I just wanna know if it'll work decently in an average car. this would alleviate the need for a bluetooth headset, which i dread using.