hi, just got 240gle estate. have chance of buying 940 diesel estate. i like 240 she is great! 940 much newer, went on holiday in 240. kept to sixty mph, got approx 34 mpg. only snag she is a bit rusty, otherwise i love this car! trouble is i cant keep both cars, insurance being main factor. what to do? any advice would be gratefully recieved.