The electric vehicle in this case is a Renault Twizy, which was supplied by Silverstone Green Energy, and was driven by the "reining British and National Autograss Driving Champion Liam Evans".
While guiding the horse is former Indoor Driving Trials Champion Lindsay Doran driving her Dartmoor Pony Missy to a Bennington Spirit.
So this isn't some fly-by-night impromptu race, these fellows are serious.
The outcome? The horse took the race in a time of 41 seconds to 42 for the Renault, unfortunately like all good horse events, penalties were in play and Lindsay racked up 20 of them....so the EV wins on a technicality!
Finally, this will show the world that the electric vehicle can displace horses as the preferred way for humans to travel in the future!
Hat tip to offib!