Falcon F7Falcon is a small Michigan-based supercar maker that many enthusiasts will have never heard of, despite the fact that its sole offering has been on sale for more than a decade. It's extremely rare even by supercar standards, with only seven examples reportedly produced as of 2021. The car featured a Lingenfelter-modified GM LS V8 engine that produces 620 horsepower as standard, but that figure can be optionally upgraded to up to 1,100 horsepower.That power is transferred to the ground through a six-speed manual transmission. Weight is also kept to a minimum thanks to a mix of carbon fiber and Kevlar chassis and body panels, with the car clocking in at 2,785 pounds. For context, that's lighter than a Subaru BRZ — and the F7 has over 1,000 horsepower on offer. Pricing for the car reportedly starts from around $250,000, although opting for the most powerful iteration will add a significant premium to that total.Saleen S7Saleen might be most famous for its modification of Ford Mustangs, but its S7 supercar is arguably its greatest creation to date. The S7 was unveiled in 2000 and was the brand's first car built from the ground up. It featured a uniquely designed 7.0L V8 engine which made 550 horsepower in naturally aspirated form or 750 horsepower with the optional twin turbos fitted. Production of the car ended in 2009, although plans were unveiled in 2017 for an updated 1,500-horsepower version called the S7 Le Mans.The S7 boasts performance figures that are still impressive today: a claimed top speed of 250 mph for top-spec variants, a 0-60 mph time of less than three seconds, and a quarter-mile time somewhere in the ten-second range. Those figures rivaled the fastest offerings from the likes of Ferrari and Porsche, as well as the Ford GT. The latter car, incidentally, was also built by Saleen under contract alongside the S7.