How would you suggest getting around in Mendoza, between wineries? The hotel we're staying at has arranged for us a private driver, but the charge seems astronomical at $400 pesos for each day. We're only going to 3-4 places a day and they're all in the same area (Lujan de Cuyo). Should we just find a taxi driver and hire him for the day (from about 10AM-5PM)? Or could we just ride a bike to the different vineyards? Are taxis easy to get in that area so we could just call one and pay for the ride between vineyards and not have to pay for waiting time?