When I first saw the Roomba on TV, I thought it would be loads of fun to have a little cleaning machine just zipping around the house on its own. Husqvarna has come out with something similar to this concept, except theirs is a solar-hybrid lawnmower.

The mower can cut grass unsupervised, which, according to its manufacturers, could save up to 40 hours of labour in the garden - the equivalent of a week's holiday - every year.

The lawnmower uses the same amount of energy as a standard light bulb and is made from 90 per cent recyclable materials.