This is not what I meant XD You want roads in real life that are straight to look straight on a map. Actually, most global map projections do not meet this simple requirement. For an extreme case, think of how compressed everything is at the top of Lambert's map.
Very long roads are not truly straight because they follow the curvature of the earth, but I was not referring to those. In any case, you're more likely to notice winding around local topology and local elevation changes on long road trips.
Very long roads are not truly straight because they follow the curvature of the earth, but I was not referring to those. In any case, you're more likely to notice winding around local topology and local elevation changes on long road trips.
Also see roywiggins answer :)