Auto expo in Delhi going to open its door for general public from today. There will be General Motors spacious, airy and bright hatchback CHEVROLET SAIL is a 5 seater. GM has also unveiled 7 to 8 people family car CHEVROLET MPV CONCEPT to challenge the Innova. After selling it's scooters in a 100 countries Piaggio is hoping to make it big with it's new luanch VESPA, a 125 cc scooter. For those who like green vehicles with clean teachnology, Mahindra has unveiled it's electric car REVA.