Ride in, ride out, from / to either France or Spain.
Why anyone woukd ever want to go to Andorra is a mystery though.
We once stayed overnight in Andorra La Vella, apart from the second best hotel car park lift ever, the experience was rather grim.
Right behind the hotel was a sheer cliff face, about 5 metres away and several hundred metres higher. A lot of their buildings are like that.
Petrol & fags were cheap though