The Experience You Need and the Trust You're Looking For! Chelmsford Street Auto Sales is located at the home of Lowell Automatic Transmission, a family owned and operated business that has serviced the greater Lowell area for over 57 years. Our Team offers you a better way to purchase your vehicle by working with you to find a vehicle that fits. Whether it's your first or your fifth, our combined inventory of over 70 pre-owned cars, trucks, vans, sport utility vehicles will provide you a wide selection of prices and styles to choose from. View our inventory, see actual photos of our vehicles, check the options, prices, CarFax, and even submit a secure credit application on-line.