To be strong enough to carry a decent load, you're pretty quickly into 7.5t territory.
Fine for anyone over 40, but it's a shrinking market that can drive them on a car license...
Not necessarily, plenty of 3.5tonne ford transits and Renault masters have it done for horses. Just something with air vents and stainless steel flooring and ramp. If they could design something simple At nearly the same price bracket of normal van, reckon people would buy one. Would mean you wouldn’t need to have a separate trailer license either.