You will enjoy moving around with the Kervelo Laidback utility trike as it combines a large loading capacity and it is very stable with its rear rigid frame.
Either shopping or commuting, you can attach various type of case on the loading platform.
The loading platform offers 50cm in width, length, and height ( actually it could be higher than 50cm, it will depend on you ! )
The rear wheel distance of 80cm gives a very good stability in turns. Still, you have to be cautious to not exceed the speed and turning radius limit.
The rear parking brake keeps the trike still when not on the move !
( more description under : kervelo-bike.com/product/laidback-utility-recumbent-trike/ )