Speed is a key factor to measure a car's performance as well as to capture a fan's heart. Here are the top 10 cars that run at the fastest speeds across the globe. According to data from supercarworld.com, the top 10 cars that run at the fastest speeds in the world are:

   Lotec Sirius (248mph)

It is a testament to the superb design of the Lotec Sirius in that it looks every bit the modern, cutting edge supercar despite the fact that it was first styled nearly a decade ago!

Following on from their earlier equally ballistic C1000 prototype, Lotec have produced one of the most powerful road cars of all time. Now with over 1000bhp and 811 lbft of torque from the Mercedes sourced twin-turbo V12 (same as used in the SL65 AMG), Lotec claims a Bugatti matching 248mph and 0-200kmh in a shattering 7.8seconds.

Just 5 of these carbon fibre leviathans will be produced per year at an eye watering ￡379,000. A lot of money perhaps, however it all but matches the Veyron for less than half the price.