You cannot seriously expect us to help you with so little information. At a minimum you should provide the following:

• What exact model of Nuxeo Car did you get? In what year did you buy it? From whom?
• On what kinds of road do you want to drive it? In what country?
• What have you customized exactly on your car? Any added spoilers, wheel rims, sound systems or paint jobs? Are they home-made or did you buy them from a third-party? Which one?
• Is the car's battery discharged perchance?
• What do you observe when you want to start the Nuxeo Car?
• Does it make noises? What do the noises sound like, and where do they come from?
• Does it smoke? What does the smoke smell like, and where does it come from?
• Have you looked if anything was leaking? What does the leaking fluid look like? Taste like?
• Have you checked the tire pressure? Is it ok? Have you at least kicked the tires once?
• If your Nuxeo Car model includes a breathalyzer for ignition, are you sure you're not drunk?
• Are you really, really, really sure that there's gas in the tank? Go check it again.

As you can imagine, we are not clairvoyant (although we try), and if you want our help (which, it must be stressed, is for free on this site) you must give us useful information and show us that you've at least tried to figure out what was going on. If you do your homework and present us with relevant information, we'll be able to give you much more meaningful answers!

Safe driving!