Jason Mamoa’s rare fleet gets electrified in Kidlington

Jason Momoa commissions Oxfordshire EV specialistd, Electrogenic, to future‑proof a fleet of his most treasured vehicles for the new HBO Max series On The Roam.

The British firm, headquartered on Station Field Industrial Estate in Kidlington with a base at Bicester Heritage, has re‑engineered two rare Land Rovers, three vintage Harley‑Davidsons and an off‑grid camping trailer for the Aquaman and Game of Thrones actor.

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The two rare Land Rovers, two Harley Davidson’s and the trailer converted by Electrogenic based in Kidlington for Jason Mamoa’s new HBO Max show (Image: Electrogenic)

For episode four of season two, Electrogenic converted two rare Land Rovers, to all-electric power, three vintage Harley Davidson motorcycles to be plug-in hybrids, and a trailer to have battery storage for off-grid adventures.

The latest collaboration follows the firm’s 2024 conversion of Momoa’s 1929 Rolls‑Royce Phantom II at its Kidlington workshop, described as one of the most complex EV conversions attempted.

Jason Momoa said: “I really love annoying Steve and trying to make things extremely difficult for them – I come in with the wildest ideas, but you make my dreams come true.

“I’m always excited about what’s happening with technology and how we move through this world, so that’s the motivation for these projects.

“I live a life that’s kind of off the grid, and I love being outdoors. I want to be able to say outdoors and try to do something in a more sustainable way.”

One of the rare Land Rovers the Kidlington business converted (Image: Electrogenic)

The rare 1949 Land Rovers remain four‑wheel‑drive, but hides a modern battery, delivering around 150 miles of real‑world range and rapid charging while preserving their rugged character.

Inside the ultra‑rare 1961 Land Rover Dormobile, one of only around 150 made, a new induction hob and electrical fit‑out turn the classic camper into a zero‑emission base for remote adventures.

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Momoa said: “It’s a whole different experience, me and my daughter going through the forest quietly – it’s beautiful.”

One of Jason Mamoa’s Harley Davidson bikes (Image: Electrogenic)

In a first for the company, three of Momoa’s century‑old Harley‑Davidsons have also been electrified for the show.

Two 1920s Model JDs now run as plug‑in hybrids, with an 11kW hub motor and removable battery packs discreetly packaged to work alongside the original V‑twin engines.

Riders can switch between petrol, electric, or combined power on the move, with the electric motor doubling as a starter.

Aquaman star Jason Mamoa (left) whose vehicles, including a rare Land Rover, was modified by a Kidlington business (Image: Ian West)

A third bike, a 1921 Model FD whose engine was beyond repair, has been revived as a fully electric machine.

Electrogenic has also equipped Momoa’s rugged Schutt Industries XVENTURE XV‑2 trailer with 93kWh of battery storage, enough to power cooking kit, refrigeration and sound systems. This project even provides enough to charge an electric 4×4 for a month-long off-grid trip.