I drive my mini shetland...it's brilliant! It's bought so much pleasure over the years to children and old people over the years if I take them for a spin in the buggy. The pony loves it and it helps keep him fit and lami free.
Step away now or everything gets very expensive... I used to show jump low level- one mare, an Ifor Williams trailer and a tempramental Land Rover.
Current count is four ponies (two for sale, one on trial ??), a horse out on loan, one custom made 7.5 tonner, a trailer with stabling on the side, three carriages and more sets of harness than I can count.