In 2001, LEGO released 3 Duplo Action Wheelers sets, all of these sets have been retired. For that year, the total price of all retail sets cost $63, today those sets are valued around $566, a growth of 799%.
Most valuable 2001 LEGO Duplo Action Wheelers set
2949 Remote Control Dozer $368.91
3 sets

2946 MyBot Expansion Kit

Theme / Subtheme Duplo / Action Wheelers
Year 2001
Pieces / Duplo figures 14 / 1
Availability Retired
2946 LEGO Duplo Action Wheelers MyBot Expansion Kit
Retail $12.99
Value $82.49
Growth  +535.0%
Annual growth 7.9%

2947 Speedbike

Theme / Subtheme Duplo / Action Wheelers
Year 2001
Pieces / Duplo figures 13 / 1
Availability Retired
2947 LEGO Duplo Action Wheelers Speedbike
Retail $14.99
Value $115.00
Growth  +667.2%
Annual growth 6.2%

2949 Remote Control Dozer

Theme / Subtheme Duplo / Action Wheelers
Year 2001
Pieces / Duplo figures 21 / 1
Availability Retired
2949 LEGO Duplo Action Wheelers Remote Control Dozer
Retail $34.99
Value $368.91
Growth  +954.3%
Annual growth 10.4%