I was out of room. There are over 150,000 acres on the California & Arizona border in the giant sand playground known as Glamis and yet I was hurtling towards the line at where I would have to lift my foot off the throttle before completing my top speed run. A moment ago I had come charging down an enormous sand hill parallel to Interstate 8 and the Mexican border, shifting gears on Yamaha’s new YXZ 1000R as the engine screamed towards 10,000 rpms.