The Honda RC100 was a prototype Formula One car built by engineers from Honda, although not as an official project. The car was completed in 1993 and tested at Honda's Suzuka Circuit before being destroyed in a crash test. Two more cars, known as RC101 and RC101B, were also built and tested before the project ended.
Later, Honda calls the RC100 as the "RC-F1 1.0X", the RC101 as the "RC-F1 1.5X", and the RC101B as the "RC-F1 2.0X". They are often called also the chassis numbers: RC1-203/1, RC1B-101, and RC2-001.
This cars should not be confused with the Honda RA099, which was an official Honda prototype intended for the 1999 season but also never ran.
Read more about Honda RC100: History