Van powered by CNG

On yesterday's trip, we traveled on a rented chauffeur driven, Nissan Caravan. I didn't get the make year, but here's the interesting thing. The 9-seater van was running on CNG. That, with the airconditioner running full speed ahead. For a vehicle on CNG, it was running quite well. We could never have guessed its fuel source, until the driver stopped at a rest stop on the motorway and headed towards the CNG station. We thought such vans were almost invariably on diesel. I guess rising diesel prices have made the switch over to CNG cost effective. For a CNG-driven vehicle, it was running pretty nicely.