Once upon a time, babushkas flew on brooms. Brooms were a lux mean of transport that not all babushka could afford. As time went on, more functional avos'kas came to replace brooms, winning hearts of many babushkas.
The main difference between avos'ka and brooms was the spacious luggage compartment, which over time babushkas preferred to the ability to fly.
Buy the avos'ka for your babushka, and she'll definitely put pirozhky into it to take to you.