More motoring thrills and spills as Fifth Gear’s 13thseason comes to an end, with Vicki Butler-Henderson, Tom Ford, Tiff Needell, Jason Platoand Jonny Smith at the helm. In this week’s seriesfinale, Tiff and Jason race against each other inthe new Renault Clio Cup. Tiff tries out theimpressive Subaru Impreza WRX STi. Jonnychecks out upcoming vehicles at the Genevamotor show. And Tom gets to see the massiveHummer H3 in action as it is stretched to its limitsby a busy mountain rescue squad. Toend this series in style, TiffNeedell and JasonPlato take on one of the toughest challenges theyhave ever faced –by competing against each other.The boys get behind the wheel of the new RenaultClio Cup to tackle a series of stunt-driving tests.Their judge in this competition is legendary stuntdriver Russ Swift. Two racing drivers, one stuntdriver and a stripped-out, searingly hot hatch –which one will hold out the longest?Elsewhere, Tiff chalks up a TV first when he getshis hands on the ultimate Subaru Impreza – theWRX STi. It may only cost £25,000, but withperformance figures to embarrass cars twice itsprice and more, the WRX STi is a car that cannotbe overlooked. Jonny Smith is on his travels this week as hegets the chance to drop by the glitzy Genevamotor show – Europe’s most glamorous carfestival. Big names such as Lamborghini, AlfaRomeo and Bugatti will be revealing exciting newmodels. Jonny looks beyond the bright lights toinvestigate the most important cars on show. Also this week, Tom Ford tests the enormousand very American Hummer H3. He helps put thisgiant SUV through its paces as it iscommandeered by a mountain rescue team. Thecar has become a modifier’s dream since itslaunch, but have the big wheels and shiny chromeover-shadowed its off-road abilities? Tom findsout by seeing how this beast of a machine canhelp save people’s lives.