I don't think so...bcoz it's more fun with more friends on a trip...On a solo trip you r independent to travel and enjoy more than a gangtrip but you don't get fun,masti with friend....
End up drinking too much and ghost of adventure arises after that.
Result is racing at highway,drive to some unknown village in hills,dance at centre of any road with high car music or fighting with other vehicle driver specially truck.
So, no solo trip from my end for man specially with car.
ššš
My last was Delhi-Jaipur this winter and it was an adventurous drive at night with dense fog around with 5ft visiblity.Trip is available in my post.
My partner has no interest in solo so i have no idea about girls traveling it.