The limited-production, world record-setting 2018 Demon and the last 2017 Dodge Viper hand-built American supercar will be auctioned as a pair in 'The Ultimate Last Chance' end-of-an-era offer with 100 percent of the hammer proceeds from the sale going to the United Way.

After leaving the Brampton plant, the last 2018 Dodge Challenger SRT Demon will travel to an upfit centre for its final stages of assembly, which includes adding a hand-painted exclusive Viper Red exterior colour, 18-inch aluminium wheels, 18-inch Demon drag radial tyres, Demon vehicle badging and a one-of-a-kind VIN instrument panel badging.

Production of the Challenger SRT Demon was limited to one model year and 3,300 units.

The winning bidder at the 20^th to 23^rd June Barrett-Jackson Northeast Auction, held at the Mohegan Sun Resort in Uncasville, Connecticut, takes home a combined 1,485bhp - the 840bhp Dodge Challenger SRT Demon - the industry's first and only purpose-built, street-legal production drag car with the most powerful production V8 engine and 20-plus industry-first, drag-performance features - and the 645bhp Dodge Viper with an 8.4-litre V10 engine, aerospace-grade lightweight carbon fibre body, iconic side exhaust and massive 14-inch wide rear tyres.