However, hydrogen will not pool like gasoline. If it doesn't ignite, it will just fly off into space. This mitigates some of the risk (i.e. if there is an accid

However, hydrogen will not pool like gasoline. If it doesn't ignite, it will just fly off into space. This mitigates some of the risk (i.e. if there is an accident, a fuel leak will either kill you quickly, or it won't)