Think we are on the limit for bike size now, maybe 8mm to the back door
Took Claud to the Golden Gate Bridge 
Managed to avoid drilling the bike, the masking tape shows no sinkage
It was staring me in the face, I wanted simple bike satnav so bought an expensive bike computer (again), got some advice Komoot, straight to the phone, I don’t need to know how my body is performing, I just need to know where I am going (in real time, not philosophically) 