[ 1 ] Industrial agriculture and small-scale farming [Internet]. Berlin: Globalagriculture; [cited 2022 Jul 1]. Available from: https:// www.globalagriculture.org/report-topics/industrial-agriculture-and-smallscale-farming.html. link1

[ 2 ] CO2 emissions from cars: facts and figures (infographics) [Internet]. Strasbourg: European Parliament; [updated 2022 Jun 15; cited 2022 Jul 1]. Available from: https://www.europarl.europa.eu/news/en/headlines/society/ 20190313STO31218/co2-emissions-from-cars-facts-and-figures-infographics. link1

[ 3 ] The story behind the Birth of the Prius, part 1[Internet]. Toyota: Toyota Motor Corporation; 2017 Dec 11 [cited 2022 Jul 1]. Available from: https://global.toyota/en/detail/20209700. link1

[ 4 ] King J. The King review of low-carbon cars: part I: the potential for CO2 reduction. 2007 Nov 7.

[ 5 ] Staffell I, Kendall K. Lower carbon cars by reducing dissipation in hydrogen hybrids. Int J Low Carbon Technol 2012;7(1):10–5. link1

[ 6 ] Vehicle licensing statistics: 2021 [Internet]. London: GOV.UK; 2022 May 24 [cited 2022 Jul 1]. Available from: https://www.gov.uk/government/statistics/ vehicle-licensing-statistics-2021/vehicle-licensing-statistics-2021. link1

[ 7 ] Our history–power to change the world [Internet]. Burnaby: Ballard Power Systems; [cited 2022 Jul 1]. Available from: https://www.ballard.com/aboutballard/our-history. link1

[ 8 ] Carlier M. Global hydrogen fuel cell road vehicles 2020, by type [Internet]. Hamburg: Statista; 2021 Apr 6 [cited 2022 Jul 1]. Available from: https://www. statista.com/statistics/1291480/hydrogen-fueled-road-vehicles-worldwide/. link1

[ 9 ] Kendall K, Kendall M, Liang B, Liu Z. Hydrogen vehicles in China: replacing the Western model. Int J Hydrog Energy 2017;42(51):30179–85. link1

[10] Ostwald W. Present science of electrochemistry and future technology. Z Elektrochem 1894;1:122–5. Germany. link1

[11] Moss D. The efficient drivers handbook. Dorset: Veloce Publishing; 2010. link1

[12] Knittel CR. Automobiles on steroids. Am Econ Rev 2012;101:3368. link1

[13] Liu Z, Kendall K, Yan X. China progress on renewable buses: fuel cells, hydrogen and battery hybrid vehicles. Energies 2018;12:54. link1

[14] D’Allegro J. Elon Musk says the tech is ‘‘mind-bogglingly stupid,” but hydrogen cars may yet threaten Tesla [Internet]. Englewood Cliffs: CNBC LLC; [updated 2019 Feb 24; cited 2022 Jul 1]. Available from: https://www.cnbc.com/2019/ 02/21/musk-calls-hydrogen-fuel-cells-stupid-but-tech-may-threaten-tesla. html. link1

[15] Carlier M. Electric vehicles in Norway–statistics & facts [Internet]. Hamburg: Statista; 2022 Sep 15 [cited 2022 Jul 1]. Available from: https://www. statista.com/topics/7176/e-mobility-in-norway. link1

[16] Kendall M, Kendall K, Lound APB. Hystory: the story of hydrogen. Adelan; 2021. link1

[17] Xu M, Patton D. China sets green hydrogen target for 2025, eyes widespread use [Internet]. London: Reuters; [cited 2022 Jul 1]. Available from: https://www. reuters.com/world/china/china-produce-100000-200000-t-green-hydrogenannually-by-2025-2022-03-23. link1

[18] UK electric vehicle and battery production. Report. Didcot: The Faraday Institution; 2019 May.

[19] Hydrogen vehicles in China: will it overtake EVs? [Internet]. Shanghai: Daxue Consulting; 2022 Jul 11 [cited 2022 Jul 1]. Available from: https://daxueconsulting.com/hydrogen-vehicles-china. link1

[20] The world will expand the use of hydrogen energy on a large scale [Internet]. Quebec: FuelCellsWorks; 2021 Mar 28 [cited 2022 Jul 1]. Available from: https://fuelcellsworks.com/subscribers/the-world-will-expand-the-use-ofhydrogen-energy-on-a-large-scale/. link1

[21] Kendall K. Green hydrogen in the UK: progress and prospects. Clean Technol 2022;4(2):345–55. link1