Clearly, platooning development is happening in many forms in many places. Fuel economy improvements are a definitive benefit in the U.S. and countries with similar trucking operations, like Australia. For the longer term the key motivator is the driver shortage, but road capacity, safety improvements, and vehicle efficiency are in play as well.
The European public and EU Member States place a premium on sustainability. Platooning contributes strongly here by reducing energy use and emissions. Even in a zero emission future with electric trucks, platooning still helps by extending range: less wind resistance means longer battery life.
The U.S. spectrum situation urgently needs to clarify, but statements from industry indicate there can be a way forward if the FCC restricts the current spectrum allowance.