How to show a coordinate grid in car::scatter3d plot

Just run the follwing code. I want to display a coordinate grid, but nothing happens:

df_runtime <- data.frame(x = c(0L, 20L), 
                         y = c(0L, 10L), 
                         z = c(0L, 50L), stringsAsFactors = FALSE)

car::scatter3d(x = df_runtime$x,
               y = df_runtime$y,
               z = df_runtime$z,
               xlab = "x", ylab = "x", zlab = "z", 
               surface = FALSE, grid = TRUE)

From the docs ??car::scatter3d I realized that

plot grid lines on the regression surface(s) (TRUE or FALSE).

Thus, the grid parameter is not what I was looking for. Is there a way to get a coordinate grid? To me, this is really useful as a guide for the eye.

---

Edit after Carles input:

I would like to keep the interactive graph - that's why I'm looking for car::scatter3d solution. If you don't need this, a combination of scatterplot3d and FactoClass is really nice. The following works in a non-interactive way:

scatterplot3d::scatterplot3d(
  df_runtime$x,
  df_runtime$y,
  df_runtime$z,
  color = "blue", pch = 19, # filled blue circles
  # type = "h",             # lines to the horizontal plane
  main = "Title",
  xlab = "x",
  ylab = "y",
  zlab = "z",
  angle = 35,
  grid = FALSE)
FactoClass::addgrids3d(df_runtime$x,
                       df_runtime$y,
                       df_runtime$z,
                       angle = 35,
                       grid = c("xy", "xz", "yz"))

If you want an interactive plot with a grid, plotly is another solution:

df_runtime <- data.frame(x = c(0L, 20L), 
                         y = c(0L, 10L), 
                         z = c(0L, 50L), stringsAsFactors = FALSE)

plotly::plot_ly(df_runtime, 
                     x = ~x, 
                     y = ~y, 
                     z = ~z,
                type = 'scatter3d',
                mode = 'markers')