New Dynamo Bike Poll

Thank you very much!!! Davide
Questionnaire results are publicly available

Do you attach a sidewall dynamo while riding a bicycle at night?

If the answer was no, why not?

That you know of, is there a bottle dynamo that, with little or no extra effort, powers iphones during the day and powers the front light and the rear LED lights while riding at night, thus eliminating the need to use batteries?

If such a dynamo existed, would you buy it?

Would you spend up to 50 Euro on this dynamo?