What is the fine-grained topic of the following text: Time to spare so we spent our un-spent public transportation $8 on a coffee, latte and an oatmeal raisin cookie for me (it only came to $6 but I already spent the other $2 earlier in the day, he he) and lolled at an umbrella table inside the Amtrak station. Only return the topic.
Spending leftover public transportation money at an Amtrak station cafe.