Practical and economical : A Zafira-style flat-folding seat system will feature, and there should be plenty of load-space. Engines for the range will include the latest four-cylinder petrols and diesels, as in the Corsa and Astra line-ups. Last year's Corsa hybrid concept also suggests that stop-start and regenerative braking technology will feature in Vauxhall/Opel's smaller model-ranges.