Increasing Oil Price!!

As the oil price increases rapidly week after week.
I start concerning how to safe some buck for gas!!

So... here is the conversation, as my parents and me were eatting dinner and watching the news!
and it's Tuesday night!!

TV news: the oil price will increase again this Tue midnight by NT$0.1/liter.

me: oh oh..i forgot to get some gas today before I came back home.
me: i should go after dinner, even thought might have to line up.
dad: how many liter do u get each time??!!
me: hmm... about 2-3 liters ba, i think!
mom: ....... ........ then..u would only save 0.2-0.3 dollers.
mom: but you have to spend ~0.5 dollers to drive to the gas station!!

me: .......oh, hehehehe (whtat an idiot i am!! XD)