Hampshire-based businessman Stephen Voller hopes the Dragons won't put the brakes on his new electric car invention, as he smashes the Den record for the most money ever asked for. But will he walk away with the cash?Serial inventor Michael Pritchard hopes to clean up in the Den with his revolutionary invention that allows every last drop of liquid to be used in household product sprays. Young Bolton entrepreneurs Umar Mohammed and Ahmed Suleman hope they'll get investment from a Dragon with their fast food curry trays.Also heading up the stairs are London sisters Audrey and Sophie Boss, who want to gain lots of extra pounds from their new approach to weight loss. And there's a touch of fantasy in the Den as Norfolk-based craftsman Russell Bowlby pitches his range of high-end children's play equipment.