some of the highlights. spencer: but this week, we're getting away from the show floor. i've been made to work up a sweat and he's been sent to freeze. but first up, we're going below the bright lights of the strip with james clayton as he checks out an unusual way to get from a to b. james: las vegas convention center is huge. it can take half an hour to walk across it. however, there's a new way to get around — tunnels with teslas in them. this is what elon musk claims is the future of transport, so we're here in las vegas to check it out. the station looks like a cross between a taxi rank and a subway. i've never been here before, and it's very pleasant. it kind of feels quite cool. but the most obvious thing that you notice is that there aren't fumes here, and you kind of realise,