Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Location | Light vehicle | Heavy vehicle (2 axles) | Heavy vehicle (3/4 axles) | Heavy vehicle (5+ axles) |
| --- | --- | --- | --- | --- | --- |
| Huguenot Toll Plaza | Paarl | R27.00 | R75.00 | R117.00 | R190.00 |
| Verkeerdevlei Toll Plaza | near Verkeerdevlei | R39.00 | R78.00 | R117.00 | R164.00 |
| Vaal Toll Plaza | near Parys | R45.00 | R85.00 | R103.00 | R137.00 |
| Grasmere Toll Plaza | Lenasia | R14.00 | R41.00 | R48.00 | R63.00 |
| Pumulani Toll Plaza | N4 exit to Rustenburg | R8.00 | R20.50 | R24.00 | R29.00 |
| Carousel Toll Plaza | between Pretoria and Bela Bela | R38.00 | R102.00 | R113.00 | R130.00 |
| Kranskop Toll Plaza | between Bela Bela and Modimolle | R31.00 | R78.00 | R104.00 | R128.00 |
| Nyl Toll Plaza | between Modimolle and Polokwane | R39.00 | R74.00 | R89.00 | R120.00 |
| Capricorn Toll Plaza | between Polokwane and Louis Trichardt | R32.00 | R87.00 | R102.00 | R127.00 |
Question:
What is the name of the plaza where the told for heavy vehicles with 2 axles is r20.50?
Answer:
Pumulani Toll Plaza