You can use your A1 bonus by making several shorter trips. In the SPARK mobile app, you can track the balance of available minutes to use them fully. 

If you travel more than 1 hour  

After your trip exceeds 1 hour, the per-minute and per-kilometer rates according to the plan you have chosen – Standard, SPARK Pro, Recharged, or Supercharged – will be applied. 

If you travel less than 1 hour per month  

If your total trips for the month are less than 1 hour, unused minutes are not carried over to the next month. According to A1 rules, SPARK cannot compensate you for unused time.