The goal is to choose a target group and to create a new design concept for an eco-friendly solar boat. Everybody knows the ice cream van from their neighbourhood. Even the typical ice cream van melody reminds us about ice cream. So why don't we have one on the lake? Especially in summer when ice cream is very popular and the sun is very strong. Therefore, perfect for solar panels. The ice cream boat is ideal for swimmers, boaters or promenaders. The boat drives with low speed on the lake. An open door means the ice cream shop is open - and vice versa.