It seems to you that for a similar gift you need a serious occasion? Of course, there are a lot of such reasons. We know at least 20.
1. Wife has no car
2. The wife has a car, but blue
3. The wife has no car, and the rights have not yet selected
4. Wife has only three cars
5. You have the second wife
6. Wife does not want a car, but you have to show who is the owner in the house
7. Wife lent you a car, and you forgot where they put it
8. The wife has a car, but she does not put on his wife
9. Wife has a large garage, and the first car there is lonely
10. You lent my wife's car to an hour, and now a ashtray is scored there, and in the trunk
11. Wife has a car, but with a unaptive number
12. Wife has a car, but she washes dishes
13. You accidentally bought an excess car, and you have nowhere to give it
14. Yesterday, you offered my wife to disperse, and the wife said that she was not on what
15. Wife gave you a birthday for a birthday, and you want her to feel rubbish
16. You have a tradition - every Friday you give my wife a car
17. You broke your wife's car, you liked it, and you want to break another one
18. You decided to punish my wife and take a plane from her
19. You decide to save and changed the timing belt on their own
20. You love your wife. This also happens