The Macca does 1Km in 19.6 sec @177mph and 200mph in 28 sec, so i'm a little sceptical that it would need 7 miles to get to 241..............however it was tested on the nardo raceway which is an oval so the distance actually needed to reach its top speed may be scewed. Hypothetically if you were able to find a stretch of straight road the F1 should reach 241 in approx 2 miles. To put the F1's performance into perspective, past 170mph not even a full race spec Formula 1 car would be able to keep up with it......