Originally Posted by
treadigraph
Similarly, the M8 west of Glasgow follows the alignment of the old Renfrew Airport runway. Although the tower block at the western end may make it less usefull.
There are a few strangely straight sections on the UK motorways - the aforementioned M74 north of Lockerbie, a couple on the M6 (Although at least one of those has 7 or 8 bridges over it)