24: Car Shower
Surfers have been longing for a built-in car shower for decades. You’d be able to shower on the go, and as more people chose a mobile life, this might be a great option. Fortunately, none of the major automakers have caught on with this idea yet. RV models are still more popular than ever, so having a shower in a car might not make sense (via CarBuzz).

The logistics of an automaker having to tool a factory to install this feature would require a massive investment. The thought of having a built-in car shower might seem cool, but the application hasn’t been perfected yet. Time will tell what happens for the future of this feature.