How much tip for Towncar Driver?

[Kim&Chris]

We'll be using a towncar one-way (from port to airport) using Southern Elegance. How much do you think I should tip the driver?

 

[webray]

20%, just like at a restaurant..a bit more if drivers helps with bags, and even more if your bags are extra heavy.

 

[1sttimecruz]

We just did the same thing (w/a different company) and were told to include a 20% tip.

 

[Edd]

Why don't you pull out your wallet and just give it to him. (Sarcastic)