The success of the De Dion-Bouton tricycle mentioned earlier allowed the builders to move forward with internal combustion engines. De Dion-Bouton engines were so durable that many automobile builders of the day sourced their engines from the company. By 1891, De Dion-Bouton had moved to quadricycles. Some were advanced enough to incorporate an engine cover (also known as a hood or bonnet), rudimentary passenger cabins, running boards, and fenders. Unfortunately, none equipped like that have survived. The model pictured above was built in 1900 and had a top speed of 31 miles per hour. It is on display at the Louwman Museum in The Hague, Netherlands.
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