So it is not surprising that prolific designer Ross Lovegrove has been seduced by the concept. His approach tackles a whole slew of urban issues - personalised transport, pollution, safe streets... He has developed the 'car on a stick', a highly glazed, two-person bubble car that travels the city on a guided network. And then, at night, it lifts itself on a slender stick, and turns into a powerful downlight, illuminating those not so mean streets. What ingenuity. Astragal is a little bothered by two points however. Firstly, the stick looks very slender, so, unless it is made from some new magic alloy, isn't it likely to bend or buckle? And secondly, what happens if you actually want to use your car at night?