Can anyone recommend a good car service in Delhi / Gurgaon? Mostly I need transit for myself and co-workers within Gurgaon - from hotel to office mostly. We also get out some and have dinner in Delhi, shop, etc.

In the past I've used hotel cars simply because it's easier to schedule, pay and expense on my end.

Would be very interested in a company that has decent vehicles, does a nice job and can queue up invoices and bill my Amex at the end of each week.