The HP4 was produced from 2012 to 2014 following the HP2 Sport which had previously been produced in much smaller numbers from 2008 to 2012. A limited-edition HP4 Race was introduced for a very short production in 2017 totaling an additional 750 units for the nameplate.
Of the 6,000 HP4s made, only a fraction came to the United States. You may have a hard time getting your hands on one, and there’s a good chance you’ll have to meet an expensive price tag to call it yours.