If this is merely subsidized electric, it says nothing about long-term sustainability of choosing it instead of diesel. Thermodynamically electricity is dubiou

If this is merely subsidized electric, it says nothing about long-term sustainability of choosing it instead of diesel. Thermodynamically electricity is dubious at best - you have 50% efficiency off the top that can never be eliminated - at least with heat engines you have the option of higher compression or temperatures or pressure to boost beyond 50%. Electrical never can.