Vanity Plate:

 ZPG-NOW

Why:  We have 2000 times the human population since Christ
walked the earth.  So in 2000 years, we have doubled our
population 11 times.  That is an average of once every 182 years.
Today the US population has a doubling rate of 52 years.  Due
to increasing life expectancies and the average age at breading,
an increasing multi-generation life expectancy overlap has
developed, so our current replacement ZPG number for each
breading couple (not per person) is down to .82 children and
slowly falling with health improvements.
Draw your own conclusions.  I didn't invent the facts.

Eleven iterations
2 x 1 = 2
2 x 2 = 4
2 x 4 = 8
2 x 8 = 16
2 x 16 = 32
2 x 32 = 64
2 x 64 = 128
2 x 128 = 256
2 x 256 = 512
2 x 512 = 1024
2 x 1024 = 2048

How many more iterations do you think is appropriate for this finite planet?

"Romeo's last wish was to be laid by Juliet."