Maybe there is a local taxi service where you could have an account. We have a local firm who'll do this - not that we use them very much now except for airport runs - and their system now knows your address from your phone number, so you don't need to repeat it every time.
After my mother gave up her car at 80 - she had become nervous of driving in traffic - we urged her to take taxis instead. She could have taken so many with what it had cost her in insurance, MOTs, servicing, never mind petrol.
But she just would not - to her they were an extravagance, and although she wasn't over-frugal in most matters this was just an extravagance too far.
It was a great shame, since she became increasingly housebound and isolated - she was never a very sociable type anyway - and relied on me or my brother to take her shopping when we were visiting. Not that we minded that at all, but I have a feeling that her increasing isolation, and ever increasing reluctance to go out at all, was a factor in her eventual dementia.