Whats the slowest car in world?

There's no single definitive answer to "the slowest car in the world" because it depends on how you define "car" and "slowest." There's no official registry tracking this.

However, contenders for the title would likely be extremely old, underpowered vehicles in poor condition, or purpose-built ultra-slow vehicles (like some experimental vehicles). Any claim to the title would be highly subjective and would require significant verification of speed.