The ornamental design for a shoppingcart, as shown and described.
1. Shopping cart
1.1 : Perspective
1.2 : Perspective
1.3 : Right
1.4 : Unfolded
Aluminium and plastic shopping cart with 4 wheels for the user not to have to bear the weight of the shopping; dual folding system; the shopping cart can be unfolded by pressing a button and becomes 4 wheels cart, in order for a user to easily load and unload items and goods that are placed in the basket or bag of shopping cart; the shopping cart becomes 2 wheels cart by pressing a button, in order for a user to easily walk with and/or push it when full and during transportation; reproductions 1.2 and 1.4 show that the shopping cart can be unfolded and the bag changed in a cuboid shape.