Actually there are loads of biking addicts here, so your husband (by that time) won't feel alone. You might explore the numerous cycling threads on EF to know more on this topic. Btw there is a cycling celebrity here who shares the same name
You can check out the "calendar" on the EF and find rides based from Zurich and other places. perhaps closer to Lucerne.
I recently did this route through Lucerne if that may interest you.
Seeking tips on bike route Lucerne-Interlaken-perhaps further
If you think of renting bikes from Zurich I can recommend shops, but renting bikes is quite common in Switzerland, and you should easily find some in Lucerne, especially given that it is your hometown and it is a tourist spot. Also, you might want to give him a bigger surprise by actually riding with him instead of just arranging a ride

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All the best.