While some work is being done to increase battery efficiency, hybrid trucks is the most sustainable solution in the next 20 years for long range routes. A hybrid truck consumes up to ~50% less diesel fuel/CO2, which can become even more efficient with an Inside-out ceramic turbine (ICT) range extender.
The ICT range extender could reduce by roughly 60% the weight of the power source over a diesel counterpart and could increase by 10% the attainable range with the same amount of fuel (compared to hybrid diesel/electric), thanks to improved efficiency.