The Cessna 310 was a radical departure and a solid advance in general aviation products when it was introduced late in 1954. The second airplane in the 300 series was the 320 Skyknight. Introduced in 1961 as a 62 model year product, the 320 was a big step up in performance. Featuring a larger cabin, it also represented one of many areas in which Cessna pioneered or at least persevered: turbocharging.
Turbocharging was not new, even to general aviation. But it was tricky, temperamental and not very reliable. Other manufacturers tried and gave up. Cessna and its vendors stuck with it, deciding that the performance gain was worth the difficulties.