Here in the UK youhave to be careful because the police are pretty hot on speed but .... I was travelling down the M5 motorway between Birmingham and Bristol when another XFIRE came into view at speed. Not wishing to be outdone I accelerated from the 100mph I was already doing and pulled into the middle lane. The other XFIRE came alongside as if to say... OK come on then lets go for it ... so we did. The last time I looked at the speed it was registering 150mph ... but what a drive.