I feel uncomfortable with sync-style communications with sales people that demand 100% of attention to their persona.

To me the sale is a matter of clear equation: success=min(price). If I have extra questions - i'll call or schedule appointment and come to talk.

Otherwise I am not interested to listen to the other guy's sales pitch and his life stories. If dealer is unwilling or incapable of answering simple question over email - this leaves a perception of some sort shady character and I move on.

And likely so others too.