The difference really is that many French motorways are toll roads (that péage sign) and have far fewer cars and lorries than the German autobahns. In Germany,

The difference really is that many French motorways are toll roads (that péage sign) and have far fewer cars and lorries than the German autobahns. In Germany, the logistics clearly utilizes the autobahns a lot. You see constant lines of heavy vehicles on the rightmost lane, and sometimes your overtaking them is interrupted by one truck passing another one, very very slowly as they both have a speed limiter, just adjusted slightly differently.