Unlocking the Horsepower: 10 Most Powerful Cars on the Market

10. SRT Viper

As part of the famous Dodge Viper line of vehicles, SRT Viper is a powerful machine with 640 horsepower and the top speed of 206 miles per hour. You can buy it for $459,000; however, there is a limited edition package called the Time Attack package that would cost you additional $16,000. The package adds another 200 pounds of downforce, making the top speed a little lower – 193 miles per hour, but making the vehicle more aerodynamic than before. An interesting thing to note is that it set the production car lap record in 2013, with 1:33:62.