Blend strawberries, bananas, and 30g sugar into a smoothie.

Cream butter and 80g sugar until fluffy. Add eggs one at a time.

Mix in the smoothie and vanilla extract.

Sift flour and baking powder, then fold into the wet mixture.

Add milk and mix until smooth.

Pour batter into a truck-shaped cake mold.

Bake at 170°C for 35-40 minutes. Cool before removing from mold.