LENR is finally coming into its own as a science. Universities and governments, as well as scientific organizations, are starting to sit up and take notice of the work being done by Andrea Rossi and others in the fields of LENR and cold fusion.
Rossi himself has said that domestic vehicles powered by an E-Cat are 20 years, at least, in the future. However, he is not the only engineer working on the problem. With his domestic E-Cat in certification right now, it could be possible that automotive engineers are waiting for access to one of the devices for the purpose of developing a personal vehicle that uses E-Cat power.
With LENR gaining more respectability, and engineering work being done on small, waste-heat engines, it could be that E-Cat power for vehicles can either aid or replace small internal combustion engines more quickly than we would think.