Return trip from south of France, incredibly nice road for 900+km. One of the highlights of this road is the Viaduc of Millau. Definitely a marvel of engineering.
Time:
Like space but more personal and precious, although you are free to use it as you wish, it will force you to travel in only one direction. It will be fair to all equally but some will get less than others. Sharing time with someone is the greatest gift you can receive.