Sequel - the cross-over concept powered by hydrogen

Despite growing acclaim for the Chevrolet Volt, the design teams were still challenged to keep experimenting with next generation fuels. The goal was to take the automobile out of the environmental debate with a design that wasn’t just for show, but a real car that could be produced and sold at an affordable price. To achieve this Larry Burns, Global Head of Research & Development, put into motion the creation of the Sequel, GM’s first hydrogen powered SUV concept car.

Unveiled at the 2005 Detroit Auto Show, the Sequel concept demonstrated that a hydrogen car could be built to meet the demands of every day drivers.

Inside, the Sequel is designed to offer everything an SUV driver expects, from air conditioning and sat nav to all-wheel drive and seating for seven.

Outside, the Sequel couldn’t be further from a regular SUV – it produces zero emissions. The only thing coming out of the Sequel’s tailpipe is steam.

Reflecting on the progress made by the Sequel concept, Larry Burns commented, "Sequel is a better car in nearly every way. Quicker, more sure-footed, easier to handle and build, while emitting only water vapor. It proves a new DNA for vehicles that is viable for the future.”

With a hydrogen car, technology known as ‘fuel cells’ convert hydrogen to electricity, which then powers an all-electric engine.

To accommodate the fuel cell without taking away interior space, designers created a ‘skateboard chassis’ which encloses the hydrogen storage tanks, batteries and electric motor in a 28cm space under the floor.

Since fuel cells require a lot of air to prevent overheating, the front and rear cooling vents also became integral to the design. To further reduce weight and increase performance, designers utilised the same ‘fly-by-wire’ technology found in modern jets.

This replaces ordinary components with computer-controlled fibre optics that allow handling and braking characteristics to be adjusted to a driver’s exact preferences.