How much to tip towncar driver

[Luvmic49]

We are a family of three and will be staying at Coronado Springs. We plan to get a towncar from the airport, I see they run about $90 to $100. How much do you usually tip the driver?
Thanks everyone.

 

[Tinkerbutt]

15%-20% is usually standard. I usually tip 10% each way for a total of 20%. ($10.00 each way)

 

[mjatgoofy]

$10-$15 each way is a good tip.

 

[princessboogirl]

I don't want to sound cheap but why does everyone tip so much? By my calculations 15% of $90.00 (the round trip total) is $13.50. Anyone have any feed back?