Yet another set of disastrous sales figures for just about every car manufacturer has got me thinking, once again, how our homegrown companies - Jaguar and Land Rover - can save some cash.Surely with their combined global sales volumes there's no need for them to run three factories? Land Rover currently produces most of its line-up at Solihull, the Freelander is manufactured in Halewood (as is the X-type) and the rest of the Jag range comes out of Castle Bromwich.What I'm proposing won’t be popular in the West Midlands but here’s how I think it may shake out…Manufacturing the Defender will surely go to India within the next few years. The emerging markets are where demand (and kinder legislation) are going to allow it to flourish and it should be made more cheaply than it probably is now. Halewood benefited from a lot of Ford investment and it’s a good place to make the Freelander which will shortly be joined by the LRX and 7-seater, codenamed L486, and the X-type will bite the bullet to make way for them (and not before time). And surely the likes of the next Discovery and future Range Rover are going to have to be made out of aluminium – where Jag’s Castle Bromwich plant is currently a centre of excellence. So surely they should be made alongside the XJ and XK?All of which leaves Solihull sadly having to go west. But as it occupies some juicy real-estate there may be even more advantages. Especially if it doesn’t mean job losses.