lots of posters were confessing to leaving all the 'car stuff' to their partners. This is just laziness and I don't think it helps to pretend that there aren't loads of women who do this. If us men should step up and do our fair share of the housework this is the other side of the coin.
Pray tell what 'car stuff' is the equivalent of the cleaning, laundry childcare and cooking that needs to be done daily? 
A survey on this very forum found that men took primary responsibility for only three domestic chores taking out the bins (weekly or fortnightly), changing lightbulbs (infrequent), and DIY (infrequent), while women did the 36 other listed chores all or most of time time and these were women who also worked outside the home, not SAHMs:
1 Weekly clean
2 Daily clean
3 Vacuuming
4 Cleaning kitchen/bathroom
5 Heavy duty kitchen cleaning (oven/fridge)
6 Tidying up
7 Washing clothes
8 Washing bedding
9 Changing sheets
10 Ironing
11 Managing the family budget
12 Organising car insurance
13 Organising home insurance
14 Organising payment of utility bills
15 Liaising with school/nursery over everyday issues
16 Liaising with school/nursery over trips
17 Being the first person called if there's a problem at school/nursery
18 Packing schoolbags
19 Doing/supervising homework
20 Arranging childcare
21 Arranging applications for primary/secondary school
22 Arranging play dates
23 Taking children to clubs
24 Organising birthday parties
25 Buying clothes
26 Organising Christmas
27 Buying family presents/cards
28 Managing doctor/dentist/optician appointments
29 Looking after children at evenings and weekends
30 Preparing activities for your patner to look after the children at evenings and weekends
31 Reading bedtime stories
32 Looking after poorly children
33 Taking time off work to look after poorly children
34 Settling children that wake in the night
35 Organising birthday presents for family members
36 Booking holiday
Women who were WOHMs spent an average of ten hours a week on housework, men spent an average of five.
If every woman in the UK left 'car stuff' to her male spouse or DP which of course is not the case then it would in no way approximate a tiny fraction of the domestic gruntwork, childcare and cooking which 'helpless men' leave to women on a daily basis.