human
Need help creating the subject line for a marketing email that will be featuring a few FedEx spec'd delivery trucks.  Please create 10 options that have a high potential for high open rates. This email will have some special pricing. 
gpt
--- Reasoning ---
1. Is the question multiple-choice question?
No
2. Is it implied multiple-choice question?
No
3. If two experts were independently asked the question, will the final answer be exactly the same?
No

--- Answer ---
open