Re: is my sentence correct?
I'm sorry, but I can't understand this at all.
What is ss15? What is an indian uncle? What was he doing with the envelopes? How did he get them and how did he know they were supposed to go to the man in the car? How do you know that was about the bank and not something else?
The one thing I can tell you for sure is that you need to capitalize "I" as well as other proper nouns, like "Honda Civic."
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.